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Shopping & Discounts
Discount Calculator
Stack coupons, calculate final sale price, and see exact dollar savings instantly with tax.
Quick Sale Presets:One-tap percent off
Price & Tax Settings
Decimals:
Applied Discounts & Coupons
Discounts apply in sequential order
You Pay (Final Total)
$173.20
Save $40.00
20% Total Savings
Pay: $160.00Save: -$40.00
Final Subtotal (80%)Discount Cut (20%)
Original Price
$200.00
Total Discount
-$40.00
Discounted Subtotal
$160.00
Sales Tax
+$13.20
ℹ️ Tax is applied after discounts (common in retail).
Examples
- Compounding
- Percent on discounted base
- Policy
- Tax timing affects totals
- List discounts
Capture all promos and coupons.
- Choose timing
Decide tax before/after policy.
- Verify totals
Validate subtotal, tax, final total.
Outcome
Clear, auditable discount breakdown for billing and ecommerce.
FAQ
How are multiple discounts applied?
They apply in sequence; percent discounts compound, fixed subtract directly.
Tax before vs after discounts?
Before: tax on base; After: tax on discounted subtotal.
Can I mix percent and fixed?
Yes—add any number of mixed discount types.
Does order change the result?
Yes—reordering percent/fixed discounts can affect totals.
How to reflect coupons?
Add a fixed discount for coupon value, then percent for promos.
What precision should I use?
Use your invoicing policy; 2 decimals is common.
Can I remove a specific discount?
Yes—each discount line can be edited or deleted.
Do negative totals get blocked?
The tool prevents totals below zero by design.
Is currency formatting automatic?
Yes—results use your browser locale currency.
How to export to invoices?
Copy the summary values into your billing system lines.
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